Structure and pseudo-ternary phase diagram of water/Triton X-100/1-pentanol/cyclohexane microemulsion

Liu, Qi; Wang, Jingkang; Wu, Hao; Zong, Shuyi; Wang, Na; Wang, Ting; Zhou, Lina; Huang, Xin; Hao, Hongxun

doi:10.1016/j.molliq.2021.118425

Cited by 7 publications

(4 citation statements)

References 48 publications

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“…The oscillating part of the form factor can be converted into useful information on the “‘real space”’ by the Fourier-transformation, and the resulting curve p ( r ) is called pair-distance distribution function (PDDF) . Details about PDDF calculation can be found in the original literature. , The PDDF curves of the clusters are shown in Figure c and f. It can be seen from Figure c that, with the addition of EtOH, the shape of the PDDF curve of the system went through a transition from symmetrical bell shape (black curve) to bimodal shape (where the second peak was lower than the first, blue, and red curve) and then to another bimodal shape with the characteristic peak with a negative valley in the middle and the second peak was higher than the first peak (green curve).…”

Section: Resultsmentioning

confidence: 99%

Regulating of Liquid–Liquid Phase Separation and Molecular Self-Assembly through Selective Solvation

Huang,

Wang,

Wang

et al. 2023

Ind. Eng. Chem. Res.

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Effectively regulating the liquid–liquid phase separation (LLPS) phenomenon in the process of molecular self-assembly is critical for controlling the qualities of the final products. However, the underlying mechanisms of LLPS that greatly affect the transition from molecules to crystals have not been fully addressed. Here, target solvents with properties of solvation or selective solvation suppression were theoretically screened to regulate the emergence and elimination of LLPS. Quantitative analysis of molecular electrostatic potential surfaces (MESP) was first applied to screen the antisolvent with solvation suppressing effect. Selective solvation suppressing was revealed, and the evolution mechanism of self-assembly in the nucleation pathways with or without LLPS was explored by experiments. It was found that clusters with unique properties of core–shell structure with dispersion transition layer may be the key to the occurrence of LLPS. This further provides new insights for understanding LLPS, which is a typical case for nonclassical nucleation theory.

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Section: Resultsmentioning

confidence: 99%

Regulating of Liquid–Liquid Phase Separation and Molecular Self-Assembly through Selective Solvation

Huang,

Wang,

Wang

et al. 2023

Ind. Eng. Chem. Res.

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“…First, Bi(NO 3 ) 3 ·5H 2 O (99.0%, Macklin, China) powder was added into a diluted nitric acid solution and continuously stirred until a transparent solution A was obtained. Second, TX-100, 1-hexanol and cyclohexane with a mass ratio of 3:2:7 were stirred and mixed in a beaker in a 40 °C water bath for 30 min to obtain microemulsion solution B, similar to the method described in references [ 36 , 37 ]. Then, solution A was slowly added into solution B with continuous stirring for another 20 min in 40 °C water bath to obtain the transparent microemulsion C. After that, NH 3 ·H 2 O (25–28%, Macklin, China) was slowly added into microemulsion C to adjust its pH value to 10–10.5.…”

Section: Methodsmentioning

confidence: 99%

Preparation of Bi2O3–YSZ and YSB–YSZ Composite Powders by a Microemulsion Method and Their Performance as Electrolytes in a Solid Oxide Fuel Cell

et al. 2023

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Bi2O3 is a promising sintering additive for YSZ that not only decreases its sintering temperature but also increases its ionic conductivity. However, Bi2O3 preferably grows into large-sized rods. Moreover, the addition of Bi2O3 induces phase instability of YSZ and the precipitation of monoclinic ZrO2, which is unfavorable for the electrical property. In order to precisely control the morphology and size of Bi2O3, a microemulsion method was introduced. Spherical Bi2O3 nanoparticles were obtained from the formation of microemulsion bubbles at the water–oil interface due to the interaction between the two surfactants. Nanosized Bi2O3–YSZ composite powders with good mixing uniformity dramatically decreased the sintering temperature of YSZ to 1000 °C. Y2O3-stabilized Bi2O3 (YSB)–YSZ composite powders were also fabricated, which did not affect the phase of YSZ but decreased its sintering temperature. Meanwhile, the oxygen vacancy concentration further increased to 64.9% of the total oxygen with the addition of 5 mol% YSB. In addition, its ionic conductivity reached 0.027 S·cm−1 at 800 °C, one order of magnitude higher than that of YSZ. This work provides a new strategy to simultaneously decrease the sintering temperature, stabilize the phase and increase the conductivity of YSZ electrolytes.

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“…Thus, information about the type of phases formed, phase shifts and phase transitions can be obtained [34]. The ratio of diffraction peaks for the lamellar phase is given as 1:2:3 [23,[35][36]. Fig.…”

Section: Saxsmentioning

confidence: 99%

Investigation of the Polymer Additive on the Lyotropic Lamellar Phase Formed by Surfactants with Different Head Groups

Cukurkent,

MASALCI

2024

Preprint

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In this study, the effect of polyvinylpyrrolidone (PVP) polymer on lyotropic lamellar phases obtained using different types of surfactants, anionic and cationic, was compared. Three different methods were used to make these comparisons. The polarized microscope (POM) method was used to observe and compare morphological changes. It was observed that the texture structures of the lyotropic lamellae phases obtained by using anionic and cationic surfactants were different from each other. Structural changes were investigated by the small-angle X-ray scattering (SAXS) method. As the polymer concentration added to the lyotropic lamellae phase(s) increased, it was determined that the structural changes of the anionic and cationic samples were different from each other. The interactions of surfactant-polymer molecules with each other and their packaging were accordingly investigated by Fourier transform infrared spectroscopy (FTIR). How the polymer was added to the lyotropic lamellae phase and how the surfactant interacted with the chain and head groups was determined by examining the frequency shifts of the methylene chains and head groups. These frequency shifts provide information about trans-gauche transformations. Both polymers and lyotropic lamellae phases have wide biological and technological uses. For this reason, their use together, that is, the interactions of polymer doped-lamellar phases, is interesting and should be understood.

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Structure and pseudo-ternary phase diagram of water/Triton X-100/1-pentanol/cyclohexane microemulsion

Cited by 7 publications

References 48 publications

Regulating of Liquid–Liquid Phase Separation and Molecular Self-Assembly through Selective Solvation

Regulating of Liquid–Liquid Phase Separation and Molecular Self-Assembly through Selective Solvation

Preparation of Bi2O3–YSZ and YSB–YSZ Composite Powders by a Microemulsion Method and Their Performance as Electrolytes in a Solid Oxide Fuel Cell

Investigation of the Polymer Additive on the Lyotropic Lamellar Phase Formed by Surfactants with Different Head Groups

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